Switch



Aug. 5 1924.

E. WESTON SWITCH Filed July 21 1916 4 Sheets$heet 1 Aug. 5 1924.

' E. WESTON SWITCH Filed July 21 1916 4 Sheets-Sheet 2 Aug. 5, 1924. 1,503,869

- 7 E. WESTON SWITCH Filed ul 21 l9l6 4 Sheets-Sheet 4 base plate removed. 7

Patented Aug. 5, 1924.

UNITE EDWARD WESTON, OF HILLSIDE, NEW JERSEY.

SWITCH.

-App1ication filed. July 21, 1916. Serial No. 110,521.

To all whom it may concern:

Be it known that I, EDWARD WESTON,-3. subject of the King of Great Britain, residing at In the particular embodiment shown one switch controls the lighting circuit and a second switch controls the ignition circuit, and a single locking device is arranged to lock both switching mechanisms in any adjusted position; or to unlock them so that the switches may be freely operated. Such a combination of parts is well knownin the art, my invention relatingto such anarrangement of the parts and to such particular constructions that a simple, compact, cheap, durable, and effective device'is obtained. The particular improvements which I have devised relate to a new mode of combination of the locking and switchingmechanisms; to a new form of key-operated looking device for the switch mechanism; to a new spring structure; to' a new form of rotatable switch body on which the spring structure is secured; to new forms of escutcheon plate and cell or back plate; to a cell or back plate carrying the necessary connections, preferably molded therein, and

having onits front and back locating, guide ing and holding projections ordepressions, preferably formed therein and thereon by molding; to newor improved methods-of securing in place the connecting pieces, bolts, studs and other, kindred devices; to the manner of mounting rotatably the switch and locking mechanisms between, the escutcheon plate and the cell plate; to the shaping of the various parts so that they can be manufactured cheaply and readily'assembled; and to various other featureswhich will appear fromthe accompanying drawings, specifications and claims. V

1nw the drawings .Fig. 1 is an elevation of the instrument.

s Fig. 2 is a sid v view of Fig. 1.

Fig. 3 is a back View, with the cell or 4. is a plan of the back or outside face oft he cell or base plate. r

" Fig. '5 is a side View of the cell or base plate, one half being shown in section on plane V V of Fig. 4.

Fig. 6 is a plan of the front or inside face of the cell or base plate.

Fig. 7 is a detail showing the manner in which the contact devices are held in place and secured against rotation. a

Fig. 8 is a section on plane VIIIVIII of Fig. 6. V

Fig. 9 is a plan view of the key.

Fig. 10 is a sectional elevation of a connector or cable terminal.

Fig. 11 is a section on plane XIXI of Fig.1, the parts being shown on a larger scale.

Fig. 12 is a plan of the spring structure.

Fig. 13 is a section on plane XIIL-XIII of Fig. 12.

Fig. ll is a side elevation of the rotatable switch body shown in Fig. 11.

Fig. 15 is a bottom plan view of Fig. 14.

Fig. '16 is a detail of the locking bolt and cooperating aperture.

Fig. 17 is a sectional elevation of parts of Fig. 16.

Fig. 18 is a section on plane XVIII- XVIII in Fig. 3. the parts being shown on a larger scale.

Fig. 19 is a section on plane XIX of Fig. 1.

Figs. 20 and 21 are plan and side views of a modification.

Figs. 22 23 and 2-1 are bottom plan and end views of a second modification.

Figs. 25 and 26 are plan and end views of a third modification.

Figs. 27 and 28 are plan and side views of a fourth modification.

Figs. 29, 30 and 31 are side, plan and end views of a fifth modification.

Figs. 32 and 33 are plan and end views of a modified form of combined indexing and locking device; and

3 1 is a modification of the device shown. in Fig. 33. 1 r

' The switching device as a whole comprises a front or escutcheon plate 1, a base or cell plate2. and switches and locking mechanism therefor rotatably mounted or held between the escutcheon plate and the base plate.

T he base or cell plate consists of a block of insulating material, having an upwardly extending flanged, and is provided with perforated ears 5, by which it is attached to the escutcheon plate. Molded into the body of the block are a number of contact devices 8, each of these devices consisting of a hollow body flanged at each end, so that they are fixedly held in, while extending through the block. The exterior of the cylindrical portion 9 is knurled or provided with longitudinal ribs or other means for preventing rotation, which when molded into place prevent rotation of the contact devices. The interior cavity is screwthreaded as at 10, to receive a binding screw and at its other end has a beveled or curved wall 11, to form a seat for the ball contacts of the spring member of the switch to be later described, thereby affording not only a good electrical connection, but also serv ing as devices for indexing the locking apertures in the switch body with'relation to the locking bolt.

. The front surface portion of the cell plate is provided with cavities 13, and 14, into which extend without contact screws 47 of the switches. 16, 16, are downwardly curved or inclined holding or' indexing depressions arranged in the circular path of movement 7 of the ball contacts of the spring member.

These ball contacts rest in these cavities 16 when the switch isin the off-position, these depressions serving to index the locking cavities of the switches in this off-position. Extending radially through V the arc-path over which the ball contacts move are grooves 17, which prevent conductive connection, between adjacent contact devices which might occur because of the fine particles of metal being rubbed off from the ball contact and forming a conductive film on the surface of the plate. The front surface of the plate is level except for a centrally arranged inwardly extending tongue 18 preferably formed integrally with the base plate and having therein a chamber 19 to receive the barrel of the lock, and a shallow cavity :20, the rim 65, of which acts as a bearing for the oscillatable locking bolt 31 (Fig. 3), of

1 the lock.

"21 and 22 are arc-shaped grooves, within which move pins 23, secured to the body of the rotatable switches, the ends of the grooves serving as limiting stops to prevent over rotation.

is a circular surface provided to receive the casing or barrel of anindicator, with whichthe device may be provided.

' 15 is a curved surface concentric with the axis of rotation of the key, to prevent the bit of the key dropping down below the bottom of the slot 15 in the escutcheon plate, and thuspreventing easy withdrawal of the key. H

As shown in Figs. 5 and 7 the ends of the contact pieces 8 project beyond the back surface of the block and adjacent to these projections are molded lugs 25 or other means formed on or in the plate to serve as the plate and serving as locating stops for the safety cut-out .device v (not herein shown) which is .secured.to the plate by a screw passing. through the contact device 85. r

29 is a projection formed during the molding and constituting a closure for. the chamber19m" The flange 4 serves not only as a closure or wall for the space within which are located the operative parts of the switches and the locking bolt, but also serves as a strengthening or stiffening rib to prevent any bending of the plate under pressure which might be applied during the operation of the switches. Q I

Each ofthe'rotatable. switch member's consists of a body portion or;hub 32having a finger piece 33, preferably formed or molded integrally therewith, and each is provided with a flange '34 which is of greater diameter than the flanged opening in the escutcheon plate 1. The application of a little oil or grease to this flange makes the joint between the switch body and the escutcheon plate practically water-tight. In the flange 34 (Figs. 14and 15) areprovided a series of locking grooves or apertures 35, 36, 37, 38, 39 (see Fig. 15) forreceiving a tongue 40 (Fig. 16) forming part of the pivoted locking bolt '31. These locking grooves do not extend entirely through thefiange, thus leaving a web portion 90 whichserves not only as a means for preventing ingress of Water, but also as a. strengthening web. The body portion 32 is also provided with a preferably integral projection or boss of less diameter than the flange 34, and inthis boss are formed or molded live grooves 41,

42, 43, 44 and 45. Secured inthe material of the .body portion and centrally of the groove 44 is a pin 23, The body portion 32 alsohas centrally secured thereto, and preferably by molding thereinto, a screw-threaded socket 46 for receivingthe screw 47 by which the spring structure may-be secured to the body portion. The cylindrical head of the'screw projects'into one of the corre sponding openings 13 or-14 in the cell plate. The inner flange of this socket 46 is knurled, so that when molded into the body portion of the switch member, rotation of the socket is impossiblet -Each of the rotatable switch members, is for the sake of interchangeability, made identical although obviously the locking apertures on the Qouter sides of each switch perform no function. It is, however, cheaper to make the switch bodies all alike,

.as only one set of molding dies is required. .A spring structure, see Figures 12 and 13, is preferably made of phosphor bronze,

formed as a single piece having'three open The circumferential parts of the sector.

shaped arms are provided with curved ball portions 52, 53, 54, preferably extend ing inwardly into the sector-shaped openings, these ball portions being also preferably formed integrally with the rest of the spring structure.

This form of spring structure has been found to be particularly elfective both me-' chanically and electrically. Each ball portion is carried'at what are practically the ends of 2 L-shaped arms so that each is mounted at theend of two united springs having a radial and a circumferential .por-

tion, the spring effect thus produced being due to the combined effect of both arms, which are, however,by the arrangement described brought into an exceedingly compact relation to-ach other so that a minimum amount of space is occupied by the spring arms. The symmetrical arrangement of the'radial arms on each side of the ball insures that the ball will accurately register with the holding or indexing cavities 16, as well as with the contact pieces 8 to make a firm electrical connection. The double arm construction also provides ample conductivity so that the waste of electrical energy is minimized. The spring structure is assembled on the body of the rotatable switch member by passing the pin 23 through the aperture in the arm 51 and then securing the whole structure to the body of the switch by means of the screw 47. The radial arms of the sector-shaped switch members rest in the corresponding grooves in the boss. The spring structure is positively driven by engagement ofthe pin 23 with the arm 51.

The whole rotatable switch member is journaled at its front portion by the engagement of the body portion 32, with the flange 7 6 of the escutcheon plate, and is held in place withoutfurther fastenings when the cell plate is secured to the escutcheon plate by screwing the nuts 58 onto the screw studs 59 which are riveted to the escutcheonplate.

The screw stud 59 (see Fig. 3) is prevented from turning by the provision of corresponding fiat sides on the screw stud and in the opening in the escutcheon plate.

As shown in Fig. 11, the portions 56 of the boss on the body 32 do not extend quite into contact with the bottom of the cell plate, so that the switch member can during operation, be pressed inwards slightly against the pressure of the spring system,

While at the same time an inward move ment of sufficient amplitude to distort or injure the springs is prevented.

The locking device consists of a two armed key-operated oscillatable locking bolt 31 provided with means for engaging the corresponding locking parts of the rotatable switch member. In this case these locking members are shown as locking tongues 40, one near each end of the locking bolt and extending in opposite directions. This bolt is stamped out of spring steel and is provided at each end with a curved member 60 (see Figs. 16 and 17), which snaps over a smooth curved or inclined head of an abutment, consisting of a curved or inclined head of a rivet 61 secured to the escutcheon plate.

The locking bolt 31 is mounted to oscillate on a stud 62 also riveted to the escutcheon plate. To provide a bearing on the bolt, there is secured thereon (see Fig. 18), a flanged hub 63 having a central aperture fitting the stud 62, this hub being preferably counterbored to avoid possibility .of contact with the staked portion of the stud 62. To assemble the bolt and its hub the central aperture in the locking bolt is located on the shank of the hub, awasher 65 is slipped over the shank, and the end of the hub is then as shown at 64, staked over the washer, thus firmly clamping together as one structure the locking bolt- 31 and the hub 63. The washer 65 rests on the rim 65 on the projecting tongue '18 of the cell plate.

The locking bolt 31 is operated by a flat key 66 (see Fig. 9) having a bit 67, which engages the walls of a cavity 68 in the looking bolt. The walls of this cavity 68 are so shaped that the bit 67, of the key, when rotated, will engage one or the other of the walls to cause an initial angular'movement of the locking bolt and may then continue its movement freely, after disengagement with the wall, in the same direction.

A slotted barrel 69 (Fig. 18) fits into thecavity 19 in the cell plate and has a retaining flange 72 resting against the back of the escutcheon plate. serving as a stop for undue rotation of the locking bolt by engagement with the shoulders 69, 70. Rotation of the key in one direction will cause the locking bolt to swing so that its tongues 40 will engage in the locking apertures of the switch member, the rounded ends 60 of the locking bolt snapping over the curved or inclined abutments 61, 61. Movement of the key in the other or unlocking direction, will cause an opposite movement of the locking bolt whose end 60 again snaps over the head of the abutment but in a reversed. direction. The locking bolt is thus prevented from accidental dis engagement from the locking position, the abutment acting as astop except when by operation of the key, the locking bolt is positively moved over it, and conversely, the abutment prevents engagement of the locking bolt with the locking apertures except by positive operation of the key.

In its disengaged position,-the locking bolt, though freely rotatable about its pivot, has one end, as will be apparent from Fig. 3, located between the upper abutmentb'l, and the inner wall of the cell plate, an additional stop against undue rotation being thus provided. It will be noted that see Figs. and 17) under the transverse pressure of the spring locking bolt, the curved underside of the part 60 thereof will be forced down either side of the abutment, thus giving the locking bolt a positive movement (independent of the movement produced by the key) in each direction. The key onlv serves to bring the locking bolt over the apex oi the abutment head, the spring action driv ing the tongue of the bolt into the locking apertures on the one hand, and, on the other, moving the locking bolt to such an angular position that the free entrance of the bit oi the key into the cavity 68 is insured. Otherwise, the shoulder 70 might come into the path of movement of the key-bit and pre vent operation of the key.

Shoulders 69 and 70 on the bolt prevent operation of the bolt byrotation of the key in the wrong direction. i

The locking apertures in the rotatable switch fmember are beveled at their outer ends to insure an easy entrance of the locking tongues, but once the tongues are in locking position, it is impossible, owing to the disposition of the tongues and apertures, at an angle to the axis of the bolt and to the radius of the rotating switchmember, to unlock the bolt by any attempted rotation of the switch members.

Asimilar spring-driving action may be attained by other means. Thus as shown in Figs. 20 and 21, a holding spring 10% may be suitably mounted against rotation by its central flat sided aperture engaging the fiattened sides of the top of the pivot pin 62, the spring being provided with downwardly extending inclined side flanges and 106. As shown in Fig. 20, the flange 106 is holdiiig the locking bolt in the locking position, while the flange 105 has ridden up and rests on the top of the locking bolt 31. Then the bolt is turned into the unlocked posi-.

tion, the flange 105 drops over the edge of the locking bolt and acts by reason of its inclination to complete the movement of the bolt, while the flange 106 rides up onto the top of the bolt. I

As shown in Figs. 22, 23 and 24:, aspring device 107 may beloosely mounted on the pivot stud beneath the locking bolt and has upturned ears 108 engaging the sides of the locking bolt so that as the locking bolt moves thespring moves with it., ,The end of the spring device .107 has a V.-shaped member 109 at its outer end whichengages corresponding notches formed 'inthe es; cutcheon'plate. f i

Ur, as shown in Figs 25 "and 26, the lock ing bolt may have "secured thereto at one end a pairof springs 100. andglOl, the: ends of: which are arranged to.. pass over, and under an abutment device 61, ,oblongin cross section and secured to the .escutcheo'n plate. I r

01', as shown in Figs; 27 and 28,thelockins, bolt itself mayliefrnadeoftwosimilar p rt 102. 103, eachfo'fspring:metal and I ed together. The endsof these parts 103, similarly engage an abutmentdevice 61 having; an :oblong cross; section. Still another fornijof this device isshown in Figs. 29, 30 and 31. "The end 110 of the locking bolt is oblong in cross. section and arranged topass between the curved ends of alpair of. stationary springs; 111, 112, secured to theescutcheon plate. 3 1

In all of these forms of device for obtaining thespring snap action.offthelocking bolt, there are provided c'ooperatingcnrved o'rinclined surfaces, one fixed "to theceseutcheon plate and the other to; the'locking' bolt, spring pressure-, being"applied to "one or the other of the surfaces-s0 thatthe look ing bolt will be moved by therpositive action of the key and the springsnapaction as above described, and will 1 be :flleld-in'T its locked 'or unlocked position by the stationary arrangement actingas an abutment until forcibly moved therefrom by the key.

The escutcheon plate is of .thef shape shown in Figs. 1 and .19,'fromwhich the construction will. be apparent. The, depressed port-ion 75 is designed to receive a current direction indicator,- notshown herein, but. described, in a contemporaneously filed application. This plateyhas riveted thereto the attaching screw studs 59,.59ythe pivot stud, 62, for the locking bolt; and the rivets whoseheads form the abutment stops 61, 61. This plate has outwardly extending flanges 76 surrounding the openings through which extend the finger pieces 33, 33 of the switches. 7 j

A convenient form of circuit connector or cable terminal 26 is shown in Fig. 10. It has a slotted piece portion provided with double, side flanges 26,the slot permitting the. insertion of a holding screw, and the flanges 26 embracing the sides of the lugs 25 on the cell platefto prevent rotation of the connector when the holding screw is screwed up. The ends of the insulated conducting cables are brought in between the flanges .82whichare then Tbentaround the insulation, while the bared end of the cable or conductor isembraced by the bent over ears or lugs183 and soldered tothe terminal.

The operation of the device will be largely apparent from the foregoing detailed description of the parts. By operating the key the locking bolt will be shifted from the locking position shown in Fig. 8, the curved ends of the bolt snapping over the heads 61 into the unlocked position. The switches can then be manipulated by the finger pieces, the balls 52, 53 and 5a. of the spring structure seating tl'iemselves' either in the hold- 111g cavlties 16 m the ofl position or the" switch or in the cavities in the heads of the connecting pieces 8, or 8 (as shown in Fig. 11), in the on-position of the switch.

When locked no suflicient force can be exerted manually on the finger pieces either to cause rotation of the switches or to cause displacement, distortion or other injury to the bolt or other parts of the locking mechanism. Any force which is exerted on the locking bolt is exerted directly along the axis of the locking bolt, either as a push or pull against the pivot, and the locking bolt while light is abundantly able to withstand any pressure so applied. It will be noted that either of the switches can be locked in any of its positions and for this purpose it is essential that the locking apertures in the switch body shall be exactly in position to permit engagement with the locking tongues. of the bolt. This indexing action is secured by means of the accurate location or" the contact members 8, 8', and'the holding cavities 16 on the cell or base plate, in which seat themselvesthe ball portions of the springs which are in turn exactly located on the switch body with reference to the locking apertures. As

the switches are rotated, the operator can readily feel and hear when the switch arrives at any of the stop positions and in any of these positions the key can be operated to lock or unlock the switches. The operator cannot, however, unduly rotate the switches as the pins 23 and slots 21, 22 limit the range of movement.

Other forms of the combined indexing and locking mechanisms may be used, two

such forms being indicated in Figs. "32,

and 34. In Figs. 32 and 33, the rotating switch members A and B are provided at the proper points with notches. Bearing against the peripheries of the switch members are two outwardly spring pressed arms C and D, having at their end heads E and F,

the outer surfaces of which are shaped to correspond with the notches in the switch members, while the inner surfaces of the heads are curved to correspond with the curvature of a locking bolt Gr arranged'to be operated by a key. The locking bolt G, has an arm G, having at its ends a ball or other means for engaging properly (located cooperating holding means GT, whichmay be properly shaped cavities in the escutch' con plate. When the heads E and F are in the position shown, the switch members are properly indexed. If the heads F and G are not in the position shown, the lock bolt cannot operate, as its ends will engage the shoulders on the heads.

in Fig. 34, is shown a similar construction except that the spring H has its ends E, F, formed to act as indexing means, the locking being of similar construction and vmode of operation to that shown in Fig. 32.

While I have shown and described in detail the preferred forms of devices, it will be understood that, except as speclfically delined in the claims, my invention is not lim ited to the precise form or construction shown as equivalent devices will be apparent to those skilled in the art.

1. In combination, two rotatable switch members having movement in substantially the same plane, a locking bolt pivotally mounted between the switch members for movement in substantially the same plane and means on the bolt and the switch members for afiording an interlocking engagement.

2. In combination, two rotatable switch members having movement in substantially the same plane, a locking bolt pivotally mounted between the switch members for movement in substantially the same plane and means on the bolt and the switch members for afiording an interlocking engagement, the bolt being substantially tangent to the switch members at the point of engagement.

3. In combination, two rotatable switch members having movement in substantially.

the same plane,'a spring indexing device, a locking bolt pivotally mounted between the switch members for movement in substantially the same plane and means on the bolt and the switch members for affording an interlocking engagement.

l. In combination, two rotatable diskshaped switch members having movement in substantially thesame plane, a locking bolt pivotally mounted between the switch members and extending tangentially to the switch members, means on the switch members and on the bolt for interlocking the same, said means being so constructed and arranged that substantially the whole force applied to the switch members in either direction is transmitted to the bolt in the direction of the axis thereof, and means resisting unlocking movement of the bolt.

5. In combination, two' rotatable diskshaped switch members having movement bers and on the bolt for interlocking the same, said means being so constructed and arranged that substantially the whole force applied to the switch. members in either .direction is transmitted to the bolt in the same, said means being so constructed and.

arranged that substantially the whole force applied to the switch members in either direction is transmitted to the bolt in the direction of the axis thereof, means for moving the bolt to locking and to unlocking position and spring means operative to resist initial movement ofthe bolt from one position toward the other position and to assist the final movement of the bolt in either direction.

7. In combination, a rotatable switch member provided with locking elements, a locking-bolt having cooperating locking elements, means for moving said bolt towards and from its locking position and springoperated means for causing the bolt to complete its locking and unlocking movement.

8. In combination, a rotatable, switch member provided with locking elements, a locking-bolt having cooperating locking elements, means for moving said bolt towards and from its locking position and springoperatcd means for causing the bolt to complete its locking and unlocking movements, comprising a rigid member and a spring member, one carried by the bolt and the other stationary.

9Q In combination, a rotatable switch member provided with locking elements, a locking-bolt having cooperating-locking ele ments, means for moving said bolt towards and from its locking position and springoperatcd means for causing the bolt to complete its locking'a-nd unlocking movements,

comprising a rigid member and a spring member, "one carried by the bolt and the other stationary, the rigid and spring members having oppositely inclined or curved en gaging surfaces.

10. 111 combination, a rotatable switch niemberprovided with looking elements, a resilient locking bolt having cooperating locking elements, a stationary abutment having curved orinclined surfaces and located in proxifmity to said switch member, and a member on said bolt having oppositely inclined or curved surfaces.

11., A rotatable switch member having a circumferentially extending flange, a central boss, locking grooves in the surface of the flange on the boss-side and recesses in the face of the boss for receiving a spring member.

l2. A rotatable switch member formed to define a central boss, a circumferentially extending flange, locking grooves in the bossside of the flange and recesses in the face of the boss, and a spring member having parts disposed in the said recesses.

13. A rotatable switch member formed to define a hub-portion, a manipulating portion at one side thereof, a flange portion at the other side thereof, a central boss extending beyond the flange and recesses in the face of the boss for receiving-a spring member.

let. A switch device comprising an escutcheon plate, a base plate, two rotatable switch members, and a common vos cillatable locking device, the switch members and locking device being rotatably held in substantially the same plane between and by the said plates.

15. A switch device comprising an escutcheon plate, a base plate, two rotatable switch members and a common oscillatable locking device, the switch members and" locking device being freely j ournaledon said escutcheon plate and held in substantially the same plane in place by the base plate.

16. A switch device comprising an escutcheon plate, a base plate, two rotatable switch members and an oscillatable locking device, the escutcheon plate having open ings therein in which the switch-members are ournaled and having thereon a pivot for the lockmg device, thebase plate having thereon means for holding the locking'device on its pivot and a surface having contacts with which the springs engage, andi means carried by said plates for freely our, w

naling the switch members and locking device between said plates.

171A switch device comprising an cutcheon plate, a base plate, two rotatable switch members and a common oscillatable locking device disposed in substantially the same plane, and means carried by said" I plates for freely journaling the: switch membersand locking device between said plates;

18. A switch device comprising an es cutcheon plate, a base plate, two rotatable spring switch members and an oscillatable.

locking device, the escutcheon plate having openings therein in which the switch-menibers are journaled and having thereon pivot for the lockingdevice, the base plate having thereon means for holding the lock-f ing device on its pivot and a surfacehaving contacts with which the springs engage.

19. A switch device comprising an cs1 cutcheon plate, a base plate, a rotatable spring switch member and an oscillatable locking device, the escutcheon, plate'having openings therein in which the switch-member is journale'd and having thereon a pivot for the locking device, the base plate having thereon means for holding the locking device on its pivot and a surface having contacts with which the spring engages, and means carried by said plates for'freely journaling the switch members and locking device between said plates.

20. The combination of a base plate carrying a plurality of circularly dis osed con tact elements and a rotatable switch menr ber comprisinga body portion, a handle portion, a circular flange portion having a plurality of inwardly extending grooves, a central boss and spring arms on the boss "extending beyond the periphery thereof and carrying at its outer ends contact'members adapted to contact gwith the said contact elements, means for holding the switch memher and the contact elements; in operative relation and a locking bolt movably mounted relatively to the plate for engaging said grooves. Y r

21. The combination of a base plate carrying two circular groups of Contact elements,

two rotatable switch members comprising each a body portioi'na'handle portion,- a

circular flange portion having a plurality of inwardly extending gmove central boss and spring arms on the boss extendingbe- "yond theperiphery thereof and carrying at its outer ends contact members adapted tocontact with one group of contact elements, means for holding the switch members and the contact elements in operative relation and a bolt pivotally mounted intermediate its ends and carrying at its ends teeth adapted to engage said grooves.

22. In a device of the class described, the

combination with an escutcheonplate hav ing a key hole, of a base plate having molded therein a cavity shaped to receive the barrel of a lock. p

' 23. In a device of the class described, the combination with an escutcheon plate having a key hole, of a base plate having molded therein a cavity shaped to receive the barrel of a lock and a cavity defining ajournal bearing for a locking bolt.

24:. A base-plate having molded therein a cavity shaped to receive the barrel. of a lock, and a projection having adjacent to and concentric with said cavity a curved surface adapted to prevent undue downward movement of the bit of the'key.

'25. The combination with an escutcheon plate having an opening-therein, a slotted lock-barrel extending into said opening, a base-plate having therein a cavity to receive the barrel, and a projection on said baseplate having adjacent to and concentric with said cavity a curved surface adapted to prevent undue downward'movement of the bit of the key.

26. In a device of the class described, a base-plate having molded therein a cell for receiving switch members and a locking def vice, a cavity for receiving the barrel of a lock and a cavity defining a journal bear ing for a locking device.

27. In a device of the character described, a base-plate having molded therein a cell for receiving switch members and a locking device and defining a marginal flange adapted to form a seat for an escutcheon plate, the said base-plate having molded therein a cavity for receiving a barrel of a lock and a cavity defining a journal bearing] for a locking device.

28. In a device of the character described, a base plate molded to define two cells for receiving two switch members, an intermeity for receiving the barrel of a look, a

c(vity forming a journal bearing for the locking bolt and a marginal flange adapted to form a seat for an escutcheon plate.

29. In a device of the character described,

a base-plate molded to define two cells for receiving two switch members, an intermediate cell for receiving a locking bolt, a

cavity for receiving the barrel of a look, a cavity forming a journal bearing for the, locking bolt and a, marginal flange adapted to forma seat for an escutcheon plate, the base-plate also having molded therein contact members extending from the outer surface of the base-plate into. the cells.

30. In a device of the character. described,

a base-plate molded to define two cells for receiving two switchimembers, an intermediate cell for receiving a locking bolt, a cavity for receiving a barrel of a look, a cavity forming a journal bearing for the looking bolt and a marginal flange adapted to form a seat for an escutcheon plate, the base-plate also having molded therein contact members extending from the outer surface of the base-plate into the cells, and a cavity in each cell adapted to form a journal bearing for the switch member.

31. In a device of the character described, a base-plate molded to define two cells for receiving two switch members, an intermediate cell for receiving a locking bolt, a cavity for receiving the barrel of a lock, a. cavity forming a journal bearing for the looking bolt and a marginal flange adapted to form a seat for an escutcheon plate, the base-plate also having molded therein contact members extending from the outer surface of the base-plate into the cells, a cavity in each cell adapted to form a journal bearing for the switch member and an arouate depression in each cell concentric with the said last mentioned journal bearing, adapted to co-operate with a projection on the switch member to limit angular move-- ment thereof.-

'32. In a device of the character described,

the combination with an escutcheon plate carrying two rotatably mounted switch members, a locking bolt mounted for oscillating movement between the switch members and a key barrel adjacent the locking bolt, of a base plate molded to define cells for the switch members, a cell for the locking =bolt, a cavity for the key barrel, a journal bearing for supporting the locking bolt and a flange forming a seat for the escutcheon plate.

33. In a device of the class described, a locking bolt comprising a central pivot portion, resilient arms extending therefrom, a locking tongue near the end of each arm and a portion onone arm deflected out of the plane thereof.

34. In a device of the class described, a locking bolt comprising a, central pivot portion, resilient armsextending therefrom, a locking tongue near the end of each arm and a .portion at the end of one arm deflected out of the plane thereof,

35 In a device of the class described, a

, locking bolt comprising a central pivot portion, resilient arms extending therefrom, a

locking tongue near the end of each arm, a-

portion on one arm deflected out of the plane thereof and means on the central portion defining a keyeengaging surface.

36 In a device of the class described, a

locking-bolt comprising a central perforated portion, and resilient arms extendingtherefrom, each arm having a locking tongue and an end'portion having inclined surfaces.

37. In. a device of the class described, a locking-bolt comprising a central perforated portion, and resilient arms extending therefrom, each arm having a locklng tongue and an end portion having inclined surfaces, and keyengaging surfaces on the central portion.

38. An oscillatable locking bolt having a central pivot portion, arms extending therefrom, a locking tongue on each arm, keyengaging faces on the central portion disposed at an angle to each other, one of said faces being. engaged when the key is turned 7 in one direction and the other of said faces being engaged when the key is turned in the other direction.

39. An oscillatable locking bolt having a central pivot portion, arms extending there from, a locking tongue oneach arm, key engaging faces on the central portion disposed at an angle to each other, one of said faces being engaged when the key isturned in one direction and the other of said faces being engaged whenthe key is turned in the other direction, and means on thev cen-- tral portion for preventing the key to be turned in the wrong direction.

40. A locking-bolt comprising a central perforated portion and arms extending therefrom, each arm having a locking tongueand an end portion deflected out of the plane of the arm and defining oppositely inclined surfaces. V In testimony whereof I affix my signature 1n presence of two witnesses. 

